Actually, it felt more like mid-Summer than the first weekend of Spring. I was up in Townsville in tropical Far North Queensland for the weekend. The days were very hot and humid, so a dip in the Pacific Ocean, early in the morning, was very welcome.
I walked along The Strand, which is the seafront promenade, to a couple of sections of the beach and had a couple of swims. The ocean was very warm (and a wee bit muddy), but still worth a dip.